exam Maths Puzzle Numerical Ability

can you please help me: (((Graph the function y=f(x)=x^2)))

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exam Other Question

Can someone help me on this problem?

I need to solve and show proof on the following equation:

5x + 8 + 3x -x + 5 = 6x -3

Thanks,
Lisa $3.50, 5 times more nickels than dimes.